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Where they have really come into their own is with 12v (battery) systems - such as in my camper van and for chums that live off grid.
We have leds in the boardroom here at my office - got a ten year free replacement deal as part of contract; as any replacement will require a fair amount of work the installer must be fairly confident that there is little chance of being called back!
curious if 40w equivlent bulbs set up as spotlights [reflective domes or however] so to shine the light on a black surface [metal?] & then compare the temp of the black metal from 3 different bulbs with IR thermometer gun. Assuming light color from 3 diff bulbs is similar , will the black surface vary in temp?BTW, saw where GE made a combo quartz/CFL bulb to to brighten quicker.
Are you alright Geezer? From an environmental perspective LED's are quite bad. Now as they are becoming more popular due to their efficiency, as you know, it just spells more toxic pollutants in our systems.
I found this article on LED's http://inhabitat.com/study-finds-led-light-bulbs-contain-unsafe-levels-of-carcinogenic-toxins/I am all in favor of LED's as they are so efficient, I have been a big fan of them for years.At University we had managed to light the whole stairway in the house by plugging in an old phone charger and linking them in series to that. I am not sure if what we were doing was safe but it certainly cut down on our electricity bill over the year. I think Organic LED's might be the way forward, they use organic semi conductors instead of compounds that mostly incorporate Gallium.
I have not heard of green washing before.... although having read the article again I see that it does seem to be very particular in that it focuses on the negative aspects of LED's. Maybe it would be better to go back to caves except our arms are a bit shorter and we can light them with LED's 
So you could green wash everything! What man made thing exists that have a positive impact on the environment?
I know there are some pretty big caves around.... What about the problem of damp?